Gusano sure hackint0sh just proposed a hack which allows to be done hear with the Touchmods app.
Remember, a few days ago, Touchmods proposed a program of VOIP for iPod Touch. He was also compatible iPhone but the only catch was that the other person didn't could not we hear since the built-in microphone of our toy is not not again taken in account.
Gusano is therefore on the Well path because there is still a troublesis that the output sound is not not enough strong to have a normal conversation.
More info on the forum